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Concept Check on Oxidation and Reduction 1. True or false: When a substance is oxidized, it loses electrons 2. True or false: When a substance gains electrons, it is reduced. 3. True or false: When Zn is converted to Zn2+ ion, zinc is oxidized. 4. True or false: Oxidation can also be defined as the loss of oxygen atoms and /lor the gain of hydrogen atoms. 5. True or false: When oxygen, O2, is converted to hydrogen peroxide, H202, we say that O2 is reduced. 6. In the reaction: 2 H2 (g) + O2 (g) ---> 2 H20 (1)

Concept Check on Oxidation and Reduction 1. True or false: When a substance is oxidized, it loses electrons 2. True or false: When a substance gains electrons, it is reduced. 3. True or false: When Zn is converted to Zn2+ ion, zinc is oxidized. 4. True or false: Oxidation can also be defined as the loss of oxygen atoms and /lor the gain of hydrogen atoms. 5. True or false: When oxygen, O2, is converted to hydrogen peroxide, H202, we say that O2 is reduced. 6. In the reaction: 2 H2 (g) + O2 (g) ---> 2 H20 (1)

Chemistry
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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Concept Check on Oxidation and Reduction 1. True or false: When a substance is oxidized, it loses electrons 2. True or false: When a substance gains electrons, it is reduced. 3. True or false: When Zn is converted to Zn2* ion, zinc is oxidized. 4. True or false: Oxidation can also be defined as the loss of oxygen atoms and /or the gain of hydrogen atoms. 5. True or false: When oxygen, O2, is converted to hydrogen peroxide, H2O2, we say that O2 is reduced. 6. In the reaction: 2 H2 (g) O2 (9) ---> 2 H20 (1) + a) Which species is oxidized and which species is reduced? b) Which species is the oxidizing agent and which is the reducing agent? 7) When a piece of sodium metal, Na, is added to water, H2O, hydrogen gas, H2, is evolved and sodium hydroxide, NaOH, is formed. a) Write a balanced equation for this reaction? b) Which species is oxidized and which species is reduced?
Transcribed Image Text:Concept Check on Oxidation and Reduction 1. True or false: When a substance is oxidized, it loses electrons 2. True or false: When a substance gains electrons, it is reduced. 3. True or false: When Zn is converted to Zn2* ion, zinc is oxidized. 4. True or false: Oxidation can also be defined as the loss of oxygen atoms and /or the gain of hydrogen atoms. 5. True or false: When oxygen, O2, is converted to hydrogen peroxide, H2O2, we say that O2 is reduced. 6. In the reaction: 2 H2 (g) O2 (9) ---> 2 H20 (1) + a) Which species is oxidized and which species is reduced? b) Which species is the oxidizing agent and which is the reducing agent? 7) When a piece of sodium metal, Na, is added to water, H2O, hydrogen gas, H2, is evolved and sodium hydroxide, NaOH, is formed. a) Write a balanced equation for this reaction? b) Which species is oxidized and which species is reduced?
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